Optical viewer



FIG. 1 is a perspective view of an optical viewer, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a side elevational view rotated 90 degrees;

FIG. 4 is a side elevational view of FIG. 3, rotated 90 degrees;

FIG. 5 is a right end view of FIG. 1;

FIG. 6 is another side elevational view;

FIG. 7 is a perspective view of a second embodiment;

FIG. 8 is a side elevational view thereof;

FIG. 9 is a side elevational view of FIG. 8, rotated 90 degrees;

FIG. 10 is a side elevational view of FIG. 9, rotated 90 degrees;

FIG. 11 is a right end view of FIG. 7; and,

FIG. 12 is another side elevational view. 

The ornamental design for an optical viewer, as shown and described. 